Machine for mixing concrete and the like.



No. 840,067. PATENTED JAN. 1, 1907. w. J. JUDD. I

MACHINE FOR MIXING CONCRETE AND THE LIKE.

APPLICATION FILED SEPT. 15. 1902.

9 SHEETS-SHEET 1-.

[ii/dealer PATENTED JAN. 1, 1907.

W. J. JUDD.

APPLICATION IILI ID SEPT. 15. 1902.

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PATENTED JAN. 1, 1907. W. J. JUD D. MACHINE FOR MIXING CONCRETE AND T HE LIKE.

APPLICATION FILED SEPT. 15. 1902.

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PATENTED JAN. 1, 1907.

I. JUDD. G CONCRETE AND THE LIKE.

APPLICATION FILED SEPT. 15. 1902.

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W. J. JUDD.

ING CONCRETE AND THE LIKE. APPLICATION FILED SEPT. 15. 1902.

MACHINE FOR MIX 9 SHEETS-SHEET 6.

Ad r- 6 6 R. I 6 a m W. J. JUDD. I MACHINE FOR MIXING CONCRETE AND THE LIKE APPLICATION FILED SEPT. 15' 1902.

PATENTED JAN. 1, 1907.

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PATENTED JAN; 1, 1907.

W. J. JUDD. MACHINE FOR MIXING CONCRETE AND THE LIKE.

APPLICATION FILED SEPT. 15. 1902.

9 SHEETS-SHEET '7.

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PATENTED JAN. 1, 1907.

W. JQJUDD. MACHINE FOR MIXING CONCRETE AND THE LIKE.

APPLIOATION FILED $EPT.15, 1902.

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[in er #07 4 I w vmym W4 No. 840,067. PATENTED JAN. 1, 1907.

W. J. JUDD.

MACHINE FOR MIXING CONCRETE AND THE LIKE.

APPLICATION FILED SEPT.15. 1902.

9 SHEETSSHBET 9.

UNITED STATES.

PATENT. ()FFIGE.

WILLIAMJ. JUDD, OF NEW YORK, N. Y., ASSIGNOR TO FREDERICK C.

AUSTIN, OFCHIGAGO. ILLINOIS.

MACHINE FOR MIXING CONCRETE AND THE LIKE.-

Specification of Letters Patent. Application filed September 15, 1902. Serial No. 123,467.

Patent ed an. 1,1907

ing Concrete and the Like, of which the following is a specification.

My invention relates to machines for mire ing up concrete, mortar, and the like, andis more particularly designed as an improvement upon the mixing-machine described in Letters Patent of the United States No, 705,676, granted to me July 29, 1902.

In themachine described in said Letters Patent the 1 otary mixing-receptacle is mounted upon an oscillatory or rocker support having a curved bearing portion supported by Objects of my invention are to lessen the power required in dumpingthe contents of the mixing-receptacle, to permit the weight of the contents of the rotary mixing-recepta- 01c to operate as counterbalance during the operation of dumping, to provide a construction of rocker-support which can be more readily made, and to provide certain novel and improved matters of combination and detail.

In the accompanying drawings, Figure 1 is a side-elevation of a mixing-machine embodying my improvements. Fig. 2 is a longitudinal central section through. the machine on a vertical plane, the mixing-receptacle being in mixing position. Fig. 3 is a like section with the miXing-receptaclein position for dumping. Fig. 4 is an end eleva tion of the machine. Fig. 5 is a detail perspective View of the automatic lever 'movements for controlling the charging and discharging positions of the mixing-receptacle; Fig. 6 is a top plan view of the mechanism or machinery for controlling the various movements. of the box. Fig. 7 is an enlarged detail section of the gearing employed for rotating the mixing receptacle. Fig. 8 is a section on line 8 8 in Fig; 7. Fig. 9 is'a detail view showing in section a portion of the hopper and a portion of the hollow journal forming an opening for the mixing-recs tacle; Fig. 10 is a diagrammatic view' il ustrating the movement of the rocker-support for the mixing-receptacle. Fig. 11 is a section on line 11 11 in Fig. 10. Figs. 12, 13,

and 14 are diagrammatic views'further'illustrating the movements illustrated by Fig. 10.

A indicates the rotary mixin'g receptacle', and B denotes the rocker-support upon which the rotary mixing-receptacle is mounted.. The mixing-receptacle illustrated is constructed with hollow journals 1 and 2, respectively for charging and discharging, and is ment being that the rocker-support in place of having a curved bearing, as in said patent, has its bearing formed by downwardly-con: verging plane-face portions, thereby forming an angular rocker-support. This angular rocker-support bears upon one or more anti friction-rolls D at one end of the stationary bed-frame C, and at the opposite end of said frame C it bears u on rolls E, having sprocket-teeth 5, which 10 and 11, on the rocker-support asa means for operating the latter.

In the construction shown the rocker-su port consists ofa frame having its en s formed by'I-beams or thannel-irons 7, provided with brackets or bearings 9 for the antifriction-rolls 3, as best shown in Fig. 4.

These end bars or beams 7 are secured to channel-bars'- 10, arranged to provide the bearing-faces 4, hereinbefore referred to.

These angle-irons 10 are atone endp'ortion of the rocker-support preferably arranged in" pairs, as in Fig. 11, and bolted together so as to leave between-each pair of such bars or beams a space suflicient for a rack 6, Figs. 10 and 11, and in this way each pair of these bars will form two plane bearing-faces, ar

engage racks 6, Figs.

ranged to bear upon bearing portions of a sprocket Wheel orroll E at opposite sides of the teeth 5 with which such roll or wheel 'is' provided. The corresponding bars 10at the opposite end portion of therocker-support may also be secured together in pairs, if desired, or they may be arranged as single bars adapted to bear upon the antifriction'erolls D. In the construction shown, however, the bars 10 are all arranged in pairs and rigidly connected together at their lower ends by short longitudinal bars 12, having their ends fitted in the spaces between the bars and bolted thereto. The rocker-support B is operated by the wheels E, forming pinions which engage the racks on the rocker-support. The. wheels or pinions E-are secured upon a rotary shaft F, which is'supp'orted upon the station-' ary bed-frame and provided with a wormwheel 13, Fig. 3. Y

The worm-wheel 13 is fixed upon the rotary shaft F and is engaged and operated by aworm 14 on a rotary shaft 15, which is sup ported u on a stationary bed-frame. The

shaft 15 is connected with and disconnected 'i'rom the driving power by a clutch device whereby it can be operated as may be desired. As an exam is of such arrangement the main driving-shaft G, Fig. 6, is provided with a pinion 16, secured thereon and arranged to enga e a gear-wheel H, which is in: turn secure upon a rotary shaft I. The gear- 11 and the shaft 1 may be driven continuously in one directionforexample, in the direction indicated by the arrow. A-pair of bevelgears 17 and 18 are loosely arranged upon a shaft I and positioned to mesh with a bevelgear 19, Whichlissecur'ed uponthe rotary shaft 15.

A clutch K is. keyed to slide along and ro- Gate with the shaft I and is arrangedbetweenthe gears. 17 and 18, which are adapted to. also form clutch members. Bythis arrangement the clutch can be operated to apply the driving power to the gears'17 and 18 4 in, alternation, whereby the shaft can be alternatelyfldr-iven in opposite directions for the purpose of reciprocating the rocker-support and also whereby power can be disconnected from the shaft 15 by causing the clutch member K to assume a position midway of and free from the gears 17 and 18. The clutch'member K is operated by a bellcrank L. (See also, Figs. 4 and 5.). This bell-crank L is o ,erated from a hand-lever M through the me ium of suitable power-transmitting connection-ms, for example, one

arm of the bell-crank L is connected with a vibratory lever-arm 20 by connecting-rod 21, and said lever-arm 20 is by a connecting-rod 22, Fig. 5 connected with a pendent ar 23 of the hand-lever M.

As hereinbefore described, the driving power is disconnected from the rotary wormshaft 15 when the clutch member K is inposition midway of the two gears 17 and 18,

' and when the driving power is thus disconnected from said shaft the vibratory lever M is. in its middle position-that is to say, it is in position midway of the two extremes of its permissible swinging movement. desired to-tilt the frame or support whcrcon v the mixing-rece tacle is mounted, an attend= ant can manual y, swing the lever M in one. or the other direction, according to the direction 6 5 inwhich it is desired to tilt the mixing-recep- When it is tacle support, it being seen that when the lever M is swung from its middle position to a suitable extent in one direction the clutch member K, which is splined on rotary shaft 1,

will be shifted so as to engage the clutch-gear 17. and that when said lever is swung from its middle position to a suit ablo'extent in an opposite direction the said clutch member K will be shifted so as to engage the clutchgear 18. \Vhen, therefore. the clutch member K engages clutch-gear 17, the worm-shaft 15 M so apply the operating power to the tilting mechanism as to cause the mixing-receptacle support to tilt from the position shown in Fig. 2 to the discharging position in Fig. 3,

and when the tilting support reaches the osition shown in Fig. 3 the attendant can isconnect the operating power from the tilting mechanism by simply shifting lever M in direction andto an extent to cause clutch member K to again assume a position midway of the clutch-gears 17 and 18.

It is also obvious that after the contents of the mixing-receptacle has been discharged the attendant can swing lever M in direction for so applying the power to the tilting mechanism as to cause the mixing-receptacle support to tilt back from the position shown in i Fig, 3 to the position shown in Fig. 1 and 1 that when such tilting support arrives at the position shown in Fig. 2 the attendant can again move the lever M, so as to cause clutch member K to assume its middle position. It

will also be seen that while the mixing-weceptacle support is tilting from the position shown in Fig. 2 to the position shown in Fig. 3 the attendant can at any instant disconnect the operating ower from the tilting mechi anism by simp y shifting the leverMin direction and to an extent to cause clutch member K to assume a position midway of the two clutch-gears 17 and 18, and when the power is thus disconnected the tilting movement of the mixing-receptacle support will termi nate. This arrestment of the tilting movement of the mixing-receptacle support is sometimes desirable- 1hr example, when it is necessary to restrict the dischargeand in such case the power can be disconnected from the tilting mechanism during the movement of the mixing-receptacle support from the position shown in Fig. 2 toward the position shown in Fig. 3 but before it has. reached receptacle support will stop in theposition:

the position shown in the last-named figure. .In order, however, to relieve the attendant tilting movement of the mixing-receptacle support, the latter is provided with two stops or tappets O. and S, Fig. 3, one for engaging and shifting lever M when the mixing-receptacle support is tilting one way and the other for engaging and reversely shifting lever M when the mixing-receptacle support is tilting the other Way, it being observed, however, that While these tappets are timed for effecting disconnection of the driving power from' the tilting mechanism connection of the driving power with the-tiltingmechanism is effected by manually operating the lever M.

When, for example, it is desired to tilt the. mixing-receptacle from the charging position (shown in Fig. 2) to the discharging position,

(shown in Fig. 3,) the attendant will shift lever M from its middle position into a position to cause connection between the driving power and the tilting mechanism, and thereupon the mixing-receptacle support will tilt toward the position shown in Fig. 3 and so continue to tilt until tappet O has engaged the lever M and moved the latter back into its middle position, thereby moving clutch member K into its middle position, and{ hence disconnecting the drivin power fromf :the tilting mechanism, and the riving power j =-being thus disconnected the action of the tilting mechanism will cease and the mixingshown in Fi 3. In order to cause the converse of suc action after the mixing-receptacle has discharged its. contents, the attendant will again shift the lever M from its mid- '-dle position, so as to a ain shift the clutch 'member K, andthereby again apply the driving power to the tilting mechanism, and

. thereupon the mixing-receptacle support will the driving power from the tilting-mechan IS In.

tilt from the position shown in Fi 3 toward the position shown in Fig. 2, and uring such movement the stop ortappet-S will engage and shift lever M into its middle position, thereby again. bringing clutch member K into its middle position, so as to disconnect transversely square or polygonal countershaft. R is fitted to slide through a correspondingly square or polygonal opening in the gear 25 said counter-shaft being also fitted to slide through aninternally square or lution. .tion of the roc er-support B the axis about polygonal sleeve 26, Fig 7, which is arranged to turn in the rocking bearing Q. The

counter-shaft R has one end portion fitted to turn in a bearing S, which said bearing is attached to the rocker-frame by arms 27, Figs.

2 and 3. At apoint beyond, the bearing S the counter-shaft R isgear-eonnected with the rotary mixing-receptacle.

In the construction shown-the countershaft R is provided with a sprocket 28, which is connected with a sprocket 29 on the rotary mixing-receptacle by a sprocket-chain 30. In place of this form of power-transmitting gearing I may, however, employ any known driving mechanism suitable for rotating the mixing-receptacle.

The countenshaft R tilts in unison with the tilting movement of the rocker-support B and has an end movement through the rocking bearing Q, the direction of such end movement'being determined by the direction in which the rocker-support B is tilted, and by reason of the gear 25, which is connected with the main driving-shaft, as hereinbefore described, the mixing-receptacle can be continuously rotated.

, The hopper'T'is'hinged at 31 upon an upwardlyextending portion of the stationary frame C, Fig. 1, and provided with an externally-beveled flange or neck 32 (see Fig. 9) around its discharge-orifice. When the mixing-receptacle is in position to receive from the hopper, the beveled flange or neck 32 of r the latter fitsin the outer end of the hollow j ournal 1 ofthe mixing-receptacle, and in order to provide a suitably-closed joint and to prevent leak the outer end. of the hollow ournal 1 has an inner bevel, as at 33 Fig. 9.

In order to uncouple the hopper fronfi the mixing-receptacle when the latter is tilted in a direction to dumpits contents, the hopper is provided with an arm or projection 34, carrying an antifriction roll 85, and the rocker-frame is provided with a ,cam projection 36, which engages the antifriction-roll 35 and forces the swinging hopper in a direction away from the rotary mixing-receptaclewhen the latter is tilted from the positionshown in Figs. 1 and 2,--in'- a direction to bring it into the position shown in Fig. 3'; i

The 'r'otary mixingreceptacle revolves about a tilting axis and tilts'about'a horizontal axis which is transverse to its axis of revo- Durin the oscillatory or rocking acwhich the mixing-receptacle tilts does not remain stationary, but, to the contrary, shifts its position and is alternately raised and lowered.

, In order to explain this feature, reference is made to Fig. 10, in which 37vdenotes the position of the axis about which the mixingreceptacle tilts when the mixing-receptacle is m the mixing or receiving position shown in Figs. 1 and 2. When the mixing-rece tacle is tilted from the position 'shownm lgs. 1

and 2 to the position shown in Fig. 3, the axis or center about which it tilts first drops and then rises.

This movement may beconveniently ex lained in the following Way:

The fu l lines-shown in Fig. indicate the rocker-support in mixing position. When portion of this movement the receptacle. and

rocker first reach the position in icated by dotted lines 38 and 38 and then the position indicated by dotted lines 39 and-39", and at theconcludmg portion'of such movement the mixing-receptacle and rocker arrive at the position indicated by dotted lines and 40.

'. cated by It will be seen that in moving from the position indicated in full lines to the position indicated by dotted lines38 and 38 the axis or center 37 will drop to the .point .41, and that in further moving to the position-indidotted lines 39 and 39 the axisor center 37 will drop to-the point 42 ,and that after reaching this last-mentionedposition the mixing-receptacle and rocker-support in reaching the position indicated by dotted lines 40 and 40 will shift, so as to again raise the axis or center from point 42 up to the point 37. By thus dropping the center or axis about which the receptacle tilts from what might be termed its natural center the load or'contents of the mixing-receptacle will materially assist the operation of dumping, and where the weight of the contents of the mixing-receptacle reaches several thousand pounds this matter of facilitating the dump ing'isim ortant, This actionof-the mixingreceptac e and its rocker-support is further illustrated by Figs. 12, 13, and 14, which illustrate three of the p'ositions hereinbefore referred to. In Fig. 12 the reference-numeral f 37 indicates the axis or center hereiribefore described in connection with Fig. 1'0,'the mixing ree'eptacle bein understood to be in positipn for mixing) i1 Fig. lgthemii-xing-ie- 'c eptacle is partially tilted for the u-rpose of discharge, and the'center or transve se axis 37 v fqs iscnow understood "to have. 'dro pad to the 'ig. 13 co'rresponding withithe dotted line 39 in Fig. '10, it-being here observed that I do not regard it as necessary to illustrate ithesposition of the mixing-receptacle and rocker intermediate of Figs 12 and 13, 'fo'r the, reason that such positionis explained in connection with Fig. 10

.42 corresponds with point 42 in ig. 10,- in

and-isofminor'importancei. Fi 13point which'dotted line 39 also corresponds with dotted 11116 391 1 Fig. .13. in Fig. 14 the mix- 5 ingereceptacle an'd its-recker sup ort aretil-ted Q "'t'othejhmit for the -purpose of 1scharge,-and 5 .the iaxis orjcenter' about which such tilting? movement is effected has now risen to the point-537, which corresponds with point 87 'in i Fig. -10, -it'bei'ng also observedlth'at dotted line 40 in Fig. 14 corresponds with dotted line 14 in Fig. '10.

When the oscillatory support 'ismoved in -a direction to bring the mixing-receptaclesinto position for dumpin or discharging its contents, and thereby s it the 'axisof rotation of the mixing-receptacle from a hOIiZOILtilliOI substantially horizontal position to an inclined position, more power will .be re fuired to effect the first than the second half 0 such movement where the axis aboutwhich the support :for the mixing receptacle oscillates is fixed, as in Patent No. 705,676. With .the construction herein involved, however, this excess of power required to effect the first half or portion of the dumping movement in the machine'of said patent-is materially lessened and a decided advantage thereby secured, particularly where the weightof materials within the .mixinggreceptacle approximates to a couple/of thousand pounds vor more. y

When my present machine is operated for dumping, the load will be falling during the first 't'portion of the dumping movement, there y lessening to :a considerable and important extent thepowerrequired. During the last half of such movement,;the axis about which the mixing receptaclewill rise and such movement would naturally involve the need of more power to efiec-t -such portion of the movement were itnot for-i the fact that-the load has been thrown sofar forward that it will automatically act as a counterrotary mixingereceptacle and midway'ofthe ends of theilatter, and hence, in efiect',.the rocker may be said to have its endportions [formed or provided with such straight tr planebearingportions. Thestraig-htor'plane caring portions thus described are supported at :pointsforward .andinrear ofitsmiddle portion iby 'bearings -su'ch .as rolls, pinion- =wheels, @or the =like-and by sucharrange ment the eccentric oscillatory eor rocking --movementof the rocker-support.is-obviomly permitted. The straight work involved in the-rockerillustrated can bemade miore read ily than'cm'ved work.-

. 'ce'nfine myself ate anyparticular form of mixing-receptacle, and in place of having a mixing-receptacle to receive at one end and discharge at the opposite end it may have a single opening adapted for both receiving and discharging, as shown and described in my application for Letters Patent.

filed July 25, 1902, serially numbered 117,019.

What I claim as my invention is 1. In a machine for'mixing concrete an the like, arotary mixing-receptacle; a rockersupport for the rotary mixing-receptacle arran ed to oscillate about an axis transverse to t e axis of revolution of the mixing-receptacle and bearings for the rocker-support at points forward and rearward of the middle part of the latter; the rocker-support being constructed with a plane or straight bearing portion inclined as to the axis of revolution of the rotary mixing-receptacle and arranged to traverse-one of said bearings.

2. In a machine for mixing concrete and the like, a rotary mixing-receptacle; a rockersupport for the-rotary mixing-receptacle arranged to oscillate about an axis transverse to the axis of revolution of the mixing-receptacle and having bearing portions formed alon downwardly-convergmg planes; and bearings which are engaged and traversed by said bearing portions of the rocker-frame.

3. In a machine for mixing concrete and the like, arotary mixing-receptacle a rockersupport for the rotarymixing-receptacle arranged to oscillate about an axis transverse to the axis about which the mixin -rece tacle revolves; a pinion for operating t e rocker-support, and annular bearings at opposite sides of the teeth of the pinion; the rocker-support being constructed with a rack engaged by the teeth of said pinion, and having bearing-faces at opposite sides of the rack and engaging upon the annular bearings at opposite sides of the pinion-teeth.

4. In a machine for mixing concrete and i 'the like. a rotary mixing-receptacle a ro ckersupport for the rotary mixingreceptacle arranged to oscillate about an axis transverse to the axis about which the mixing-receptacle revolves; a inion for operating the rocker-support, an annular bearings at opposite sides of theteeth of the pinion; the rocker-support being constructed with a rack engaged by the teeth of the pinion, and a pair of bars between which the rack is secured, and said bars being provided with straight bearing-faces arranged to engage upon the annular bearings at opposite sides of the pinion-teeth.

5. In a machine for mixing concrete, and the like, a rotary mixing-receptacle having a hollow journal forming an opening therefor; a swinging hopper sup orted independently of the mixing-receptacib and having its discharge opening through a neck ada ted to coup e with the said hollow j ournalw en the mixing-receptacle is in position to receive from the hopper; an arm projecting downwardly from the hopper, a projection on the oscillatory hopper-support, and an antifriction-roll inter osed between the said arm and projection an supported upon one of them.

6. In a mixing-machine for concrete and the like, a rotary mixing-receptacle and a tilting su port therefor; mechanism for actuating the tilting support for the rotary mixing-receptacle; a clutch device for applying driving power to the mechanism for'actuating the said tilting support; a clutchpurpose set forth.

WILLIAM J. JUDD. Witnesses:

A. F. NORRIS, CHAS. SAXE. 

